Volcano: weak spot in the crust where magma (molten material) comes out Magma: molten mixture of rock-forming substances, gases, and water from mantle Lava: when magma reaches a surface Ring of Fire: major volcano belt, formed by many volcanoes that rim the Pacific Ocean Island Arc: resulting volcanoes create a string of islands Hot Spot: area where magma from deep inside the mantle melts through the crust like a blow torch
Table of Contents
3.1 Volcanoes and Plate Tectonics
Vocabulary
Volcano: weak spot in the crust where magma (molten material) comes out
Magma: molten mixture of rock-forming substances, gases, and water from mantle
Lava: when magma reaches a surface
Ring of Fire: major volcano belt, formed by many volcanoes that rim the Pacific Ocean
Island Arc: resulting volcanoes create a string of islands
Hot Spot: area where magma from deep inside the mantle melts through the crust like a blow torch
Outline
What is a Volcano?